Catnip (catmint (common)) care

Light

Most houseplants will scorch where catnip thrives. Give it the windowsill you'd otherwise leave empty because everything else burned there. 6 hours of direct sun; tolerates partial shade. A plant moved abruptly from low light to direct sun bleaches in 48 hours — always acclimatise over a week.

Watering

Aim for weekly watering for catnip, but treat that as a starting point rather than a rule. A south-facing summer windowsill will dry the pot twice as fast as a north-facing winter room. Lift the pot; if it feels noticeably lighter than it did wet, water it. Drought-tolerant once established.

Soil and pot

Catnip grows best in free-draining loam. pH 6.1-7.8; tolerates poor soils. A pot with a working drainage hole is non-negotiable for this species — even free-draining mix will turn soggy in a closed planter. If you love the look of a decorative pot without a hole, use it as a cachepot around an inner nursery pot you can lift out to water.

Humidity and temperature

Catnip sits happiest at around 40-70% (outdoor) humidity and 15-26°C (60-80°F). Outdoor humidity rarely matters. If you keep the room above 15 year-round and avoid placing the plant near a cold draught, a hot radiator, or an air-conditioning vent, you have already handled the two biggest indoor stressors.

Fertilising

Feed catnip sparingly. None needed in average soil. Skip fertiliser entirely on a stressed, recently-repotted, or actively wilting plant — fertiliser salts make damage worse, not better. Wait for a round of healthy new growth before resuming a feeding rhythm.

Common problems

Below are the issues we see most often on catnip in the Growli community. Each is annotated with the most common cause so you know where to start.

• Cats roll on the plant and crush it — Plant in a wire cloche or grow in a hanging pot until established.
• Self-seeds aggressively — Cut back before seed sets.
• Leggy after flowering — Shear back hard for a fresh flush.
• Powdery mildew — Improve air flow.
• Aphids — Rinse off; ladybirds clean up quickly.

Companion plants

Catnip pairs well with Cabbage, Squash, and Bean. These are species with similar light and water needs, so you can grow them in the same bed or container without conflict.

Propagation

Stem cuttings, division, or seed. Propagation is the cheapest, most satisfying way to expand a collection — and it doubles as insurance against losing a mature plant to an accident. Take a backup cutting once the parent is established and healthy.

Toxicity to pets

Catnip is pet-safe. Nepeta cataria is non-toxic to cats and dogs and listed by ASPCA as safe. The mild euphoria it causes in some cats is harmless and short-lived. If you keep cats, dogs, or curious children in the house, weigh placement carefully — a high shelf or a hanging planter is enough for casual safety. For severe ingestion incidents, call your local vet and the ASPCA Animal Poison Control Center (in the US, 888-426-4435).

Pet-safety status is sourced from the ASPCA Toxic and Non-Toxic Plant List, which catalogues the most-asked-about plants for cats, dogs, and horses.

Catnip deep-dive guides

Every aspect of catnip care, each with its own calibrated guide:

• Common catnip problems & fixes
• Catnip watering schedule
• Catnip light requirements
• Best soil mix for catnip
• Catnip fertilizing guide
• When to repot catnip
• How to propagate catnip
• How to prune catnip
• What's eating my catnip?
• Catnip growth rate & size
• Catnip cold hardiness
• Catnip temperature & humidity
• Is catnip toxic to cats & dogs?
• Is catnip toxic to cats?
• Is catnip toxic to dogs?
• All 19 Nepeta varieties

Featured in these plant shortlists

Catnip qualifies for 1 curated Growli shortlist — each one filtered objectively from our structured plant-care library, so the selection is consistent and checkable:

• Best pet-safe low-maintenance plants — Non-toxic to cats and dogs and forgiving of forgotten watering — the easiest safe choices for a busy pet household.
• Browse all 30 plant shortlists — pet-safe, low-light, drought-tolerant and more

Related guides

Catnip is also commonly called catmint (common) or catswort.

• Western Wild Ginger care — light, water and common problems
• Greater Celandine care — light, water and common problems
• Greater Galangal care — light, water and common problems
• All 10153 plant care guides in the Growli library